out13.ervers.com has no CNAME records.
Question and response
Question
dig out13.ervers.com. NS
Answer
The response has no answer records.
Authority
ervers.com. 9803 SOA ns11.ervers.com. admin.ervers.com. 2026022000 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0